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Doug's avatar

Thanks for this, Richard. Beautifully and wisely written. You bring together many different levels of understanding the problem that create a compelling argument for the true understanding of energy sources and consumption as well as our fanatic fixation and embrace of technology. You lay out the sad obsession we have and have had with technofixes.

It is so incredibly important to look at the history of things. But for many of us, the past is dead and gone. It's onward and upward. Well, hey, Luddites of the world unite! The precautionary principle will rule the day! Call out ignorance and greed and let the voice of the people prevail.

Chris forman's avatar

Well said. We need to balance material and energy flows with elegant sufficiency. The challenge is the materials- not the energy.

The energy flux is well defined: sunlight. we need to make all our structures in a non-equilibrium flow of energy from the sun + geo thermal + nuclear. Solar dwarfs the other two.

All that energy input is used and converted to heat which leaves again. The black body radiation of the planet (thermionic emissions). You could think of it as total planetary resistance in your analogy.

That input energy gets converted to heat and in doing so there is an entropy change in the radiation throughput of earth.

That creates a total “entropy budget” for creation of all structure on earth - geological, economic. Meteorological and biological.

We have to partition flow of that energy from low to high entropy through all those processes.

The key to “comfort” is material efficiency. How can we build more with less.

Nature has already solved this problem.

In a nutshell it comes down to learning how to process information in material to yield structure with arbitrary forms.

I wrote a book outlining a framework based around this concept.

Brave green world.

HTH.

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